Well, yes, nice image but... has nobody noticed how all the leaves have *exactly* the same shade of green? And how the daffodils and buttercups are the same color? And look at that (unnaturally bright) path... the pebbles & ground have identical hue; they just vary in brightness.

These clues all point to this being a hand-tinted black-and-white photo. It was probably done in the 19th century or early 20th when such work was very popular.